Remove tls block from ingress on OpenShift

Since we want to use the existing wildcard tls certificate of the ingress controller, we have to remove the `tls` spec on the ingress object.

Source: https://docs.openshift.com/container-platform/4.14/networking/routes/route-configuration.html#creating-edge-route-with-default-certificate_route-configuration

content/en/docs/helm/simplechart.md

@@ -177,9 +177,6 @@ ingress:
       paths:
         - path: /
           pathType: ImplementationSpecific
-  tls:
-    - hosts:
-        -  mychart-<namespace>.<appdomain>
 [...]
 ```
 
@@ -195,9 +192,6 @@ ingress:
       paths:
         - path: /
           pathType: ImplementationSpecific
-  tls:
-    - hosts:
-        - mychart-<namespace>.<appdomain>
 [...]
 ```